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<p>Reports usages of forward references on the class level, which can lead to unexpected behavior during class
  initialization.</p>
<p><b>Example:</b></p>
<pre><code>
  class Test {
    val first: Int  = second + 5 // here second is 0
    val second: Int = 5
    // first will be 5 and not 10
  }
</code></pre>
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